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A frame overo. Overo refers to several genetically unrelated pinto coloration patterns of white-over-dark body markings in horses, and is a term used by the American Paint Horse Association to classify a set of pinto patterns that are not tobiano. Overo is a Spanish word, originally meaning "like an egg". [1]
Whether a horse visually appears to have the frame pattern or not, testing horses of frame or "overo" lineage is highly recommended. The statistical likelihood of producing a living, frame-patterned foal by crossing two frames is 50%, the same odds of producing a living, frame-patterned foal from a frame-to-nonframe breeding which carries no ...
References A ace Slang for the drug acepromazine or acetyl promazine (trade names Atravet or Acezine), which is a sedative : 3 commonly used on horses during veterinary treatment, but also illegal in the show ring. Also abbreviated ACP. action The way a horse elevates its legs, knees, hock, and feet. : 3 Also includes how the horse uses its shoulder, humerus, elbow, and stifle; most often used ...
The term "cropout" is today most closely associated with horses of American Quarter Horse breeding. [2] These horse are often registered as American Paint Horses, where the term usually refers to horses with overo coloring and whose parents were solid horses not registered with the APHA. [3] It may also refer to sabino-patterned horses. [1]
Three horses with different coat colors. Horses exhibit a diverse array of coat colors and distinctive markings. A specialized vocabulary has evolved to describe them. While most horses remain the same color throughout life, a few, over the course of several years, will develop a different coat color from that with which they were born.
SW1 is the most common known variant. It is incomplete dominant, meaning it has different effects depending on whether one copy or two copies are present. Horses heterozygous for SW1 (one copy) may have a minimal splash pattern, or may be completely solid. Horses homozygous for SW1 (two copies) have the more extensive classic splashed white ...
Grullo [1] (pronounced GREW-yo) [2] [a] or grulla is a color of horses in the dun family, characterized by tan-gray or mouse-colored hairs on the body, often with shoulder and dorsal stripes and black barring on the lower legs. The genotype for grulla horses is a black base with dun dilution.
A similar effect is observed in pinto horses with both the tobiano and frame overo pattern; these "toveros" often have more white than either tobiano or frame overo-patterned horses. Similarly, two apparently solid-colored horses with separate factors for white markings may produce a foal expressing both, with more white than either parent.